EP0566363B1 - Druckknopf und diesen aufweisender Verpackungssack - Google Patents

Druckknopf und diesen aufweisender Verpackungssack Download PDF

Info

Publication number
EP0566363B1
EP0566363B1 EP93302861A EP93302861A EP0566363B1 EP 0566363 B1 EP0566363 B1 EP 0566363B1 EP 93302861 A EP93302861 A EP 93302861A EP 93302861 A EP93302861 A EP 93302861A EP 0566363 B1 EP0566363 B1 EP 0566363B1
Authority
EP
European Patent Office
Prior art keywords
ldpe
snap fastener
experimental example
packaging bag
density polyethylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93302861A
Other languages
English (en)
French (fr)
Other versions
EP0566363A1 (de
Inventor
Toyokazu c/o Idemitsu Petrochem. Co. Ltd. Takubo
Shigezo c/o Idemitsu Petrochem. Co. Ltd Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Publication of EP0566363A1 publication Critical patent/EP0566363A1/de
Application granted granted Critical
Publication of EP0566363B1 publication Critical patent/EP0566363B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S24/00—Buckles, buttons, clasps
    • Y10S24/30—Separable-fastener or required component thereof
    • Y10S24/43—Separable-fastener or required component thereof including member having distinct formations and mating member selectively interlocking therewith
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45152—Each mating member having similarly shaped, sized, and operated interlocking or intermeshable face
    • Y10T24/45157—Zipper-type [e.g., slider]
    • Y10T24/45168—Zipper-type [e.g., slider] for container [e.g., bag]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24008—Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • Y10T428/2817—Heat sealable
    • Y10T428/2826—Synthetic resin or polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/31739—Nylon type
    • Y10T428/31743—Next to addition polymer from unsaturated monomer[s]
    • Y10T428/31746—Polymer of monoethylenically unsaturated hydrocarbon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer

Definitions

  • This invention relates to a snap fastener and a packaging bag having the snap fastener and, more particularly, is applicable to several fields such as the food industry, pharmaceutical preparations, and donrdashery.
  • One of the known general methods to produce the packaging bag is to extrude a cylindrical film with the male half-member as well as the corresponding female half-member through an extruding die, and the other is to preliminary produce a two-piece type snap fastener tape of which one is used as the male half-member and the other is used as the corresponding female half-member and to adhere/weld the tape on a base film as the packaging bag body by means of a thermal adhesion method or an adhesive agent.
  • the former method involves some problems such as there is a limit to variety of applicable resins, it is inapplicable to laminated films, it can not be adapted to required sizes of packaging bags, and it can not be printed easily, so that this method is restricted to produce general-purpose packaging bags.
  • the latter method has some advantages in applications to various size bags, dealing and cost, and because the packaging bag can be produced by a combination of a tape with snap fastener and a base film, this method is more popular than the former method.
  • the qualities of the material for the snap fastener are preferably low-density polyethylene (LDPE), polypropylene (PP) or the like so that the snap fastener can be adhered to the base film made from the same resin. Therefore, if the outer layer of the base film where the snap fastener is attached is made from LDPE, the snap fastener should be produced from LDPE too.
  • LDPE low-density polyethylene
  • PP polypropylene
  • the snap fastener made from LDPE or PP tends to have insufficient adhesion to the bag body at a low heating temperature.
  • the packaging bag with the snap fastener made from LDPE is sterilized by boiling, some problems will arise.
  • EP-A-0371402 discloses a snap fastener for a packaging bag, and a bag having said fastener attached thereto, the fastener comprising a pair of elements capable of engaging one another to close the bag, and wherein the portion of the fastener that is to be welded to the bag body consists mainly of an ethylene vinyl acetate copolymer resin containing vinyl acetate in an amount of 1 to 9% and having a melt index of 0.5 to 6.0 g/10 minutes.
  • a snap fastener according to the present invention comprises a welding portion to be welded to an object to be provided with the snap faster, the welding portion of said snap fastener being made of a linear-chain low-density polyethylene.
  • the welding portion of the snap fastener may be made of a compound resin of linear-chain low-density polyethylene (L-LDPE) and a low-density polyethylene (LDPE) as a sub-ingredient.
  • L-LDPE linear-chain low-density polyethylene
  • LDPE low-density polyethylene
  • the compound resin of the linear-chain low-density polyethylene and the low-density polyethylene is set in a ratio of 95-60wt% : 5-40wt%.
  • the resin forming the welding portion has a melt index (MI) of from 1-15g/10minutes, preferably from 2-8g/10minutes.
  • MI melt index
  • the MI beyond this range causes a poor shape of the snap fastener after boiling so that the performance of open-and-close function becomes bad.
  • the recommended thickness of the welding portion is 80-220 micrometers, preferably 130-170 micrometers because the hot-welding temperature tends to fall upon a decrease of the thickness of the welding portion.
  • a method of producing the snap fastener is not limited particularly to a certain one, but can be conducted by being molded by means of a corresponding die and cooling the molded article in water.
  • the original shape of the snap fastener according to the present invention need not only be limited to one shape formed of a pair of half-members intermeshing each other, but may also have a known shape having portions capable of intermeshing to each other.
  • a packaging bag capable of opening-and-closing repeatedly according to the present invention is characterized to have: a bag body heat-sealed at three side portions thereof; and a snap fastener having a welding portion to be welded to one side portion other than the three side portions of the bag body, the welding portion of said snap fastener being made of a linear-chain low-density polyethylene.
  • the welding portion of the snap fastener may be made of a compound resin of a linear-chain low-density polyethylene and a low-density polyethylene as a sub-ingredient.
  • the hot-welding between the snap fastener and the bag body can be conducted by means of a heat, high-frequency, ultrasonic waves energy, or the like.
  • the preferable resins for the inner side layer of the bag body are made of, for example, LDPE, ethylene-vinyl acetate copolymer (EVA), ethylene-methacrylic acid copolymer (EMAA), ionomer (IO), L-LDPE or the like.
  • the most preferable material is L-LDPE considering thermal properties.
  • the outer side layer contacting with the inner side layer is preferably Nylon, Polyethylene terephtthalate (PET), PP, Biaxially oriented nylon finished with vinylidene chloride (KON) and Biaxially oriented polypropylene finished with vinylidene chloride (KOP), or the like.
  • the snap fastener can add thereon with a general compounding ingredient, if necessary, for instance, a coloring agent, stabilizing agent, anti-oxidizing agent, slipping agent, chemical destaticizer, or the like.
  • a coloring agent for instance, a coloring agent, stabilizing agent, anti-oxidizing agent, slipping agent, chemical destaticizer, or the like.
  • the slipping agent as one of the known compounding ingredients should be added to the materials to produce the snap fastener in an amount of 0.05-0.5wt%, in order to obtain smooth intermeshing between the male half-member and the female half-member.
  • slipping agents are oleic acid amide, erucic acid amide, stearic acid amide, behenic acid amide, oleyl palmitamide, calcium stearate, talc, kaolin, silica, polysiloxane, and so on, but oleic acid amide and erucic acid amide are preferred. When either oleic acid amide or erucic acid amide is used, the mentioned addition ratio should be maintained to obtain a preferable performance of open-and-close.
  • the anti-oxidizing agent a phenolic, phosphorus, or sulfur type can be applied.
  • the chemical destaticizer 0.05-0.5wt%, preferably 0.1-0.2wt%, of compound consisting of stearic acid monoglyceride and palmitinic acid monoglyceride is preferable.
  • Figure 1 is a sectional view of a pair of male and female half-members capable of intermeshing according to the first embodiment of the present invention.
  • Figure 2 is a sectional view of the snap fastener in an intermeshing state.
  • Figure 3 is the front view of a packaging bag with the snap fastener according to the first embodiment.
  • Figure 4 is a sectional view of the packaging bag with the snap fastener depicted in Figure 3.
  • a male half-member 12 and a female half-member 13 formed into shapes as shown in Figures 1 and 2 according to the present invention can be manufactured from a linear-chain low-density polyethylene (L-LDPE) as a feed stock, while extruding and cooling successively the L-LDPE through an extruder.
  • L-LDPE linear-chain low-density polyethylene
  • the L-LDPE has a melt index; 6 g/10 minutes.
  • a snap fastener 11 in this experimental example can be fabricated with the male half-member 12 and the female half-member 13.
  • the male half-member 12 is integrated with a web-like base section 14 as a welding portion to be welded to a bag body, a sectionally heart-shaped head section 15 and a joint section 16 to connect both sections 14 and 15 with each other.
  • the female half-member 13 is integrated with a web-like base section 17 to be welded to a bag body, a semi-circular first hook 18 fixed in relation to the base section 17 and a second hook symmetrical to the first hook 18. There is provided an interval 21 between edges 18A and 19A of both hooks 18 and 19. Incidentally, the bese sections 14 and 17 have a thickness of 150 micrometers.
  • An intermeshing between the male and female half-members 12, 13 can be performed by moving both half-members 12, 13 towards each other so that the head portion 15 of the male half-member 12 is held at the interval between the edges 18A and 19A of the female half-member 13, and continuously moving the two members towards each other while parting the hooks 18, 19 to the right and the left until the head section 15 is completely located in the space between the hooks 18, 19.
  • Figures 3 and 4 are related drawings depicting a packaging bag 24 with the above-mentioned snap fastener 11 consisting of the male half-member 12 and the female half-member 13.
  • the packaging bag 24 can be fabricated by heat-welding both base sections 14 and 17 of the male and female half-members 12 and 13 to a base film 23 forming a bag body 22 by means of a heat seal bar at a temperature of 143 degrees and further heat-sealing three sides of the bag body 22 except for an opening side where the snap faster 11 is lain.
  • the base film 23 has two layers; a nylon-6 layer(15 micrometers)/a L-LDPE layer(120 micrometers), wherein the L-LDPE layer is used as an inside layer of the bag body 22 and adapted to be heat-welded with the male half-member 12 or the female half-member 13.
  • the presence of “Tear” means, when opening the packaging bag, a state in which there is a break on the bag where the heat seal bar acted to the base sections 14, 17 so as to heat-weld the base sections 14, 17 and the inside layer of the bag body 22.
  • the "Abnormal appearance” means a malfunction of the snap fastener 11 because of its thermal deformation, or a state in which the packaging bag looks unattractive because of creases thereon which is caused by the heat contraction gap between the snap fastener 11 and the base film 23.
  • a legend "Double-circle” explains a preferable shape of the both half-members
  • a legend "Circle” explains a state in which unfavorable deformation of the half-members can be seen, but which can be still put to practical use
  • a legend "Cross” explains a state in which the deformation of the both half-members is too big to intermesh to each other.
  • a description of 100 wt% of L-LDPE may not mean its pure state for making the snap fastener 11 but can contain a very little and general formulating ingredient.
  • the snap fastener 11 of the present invention can be preferably heat-welded with the bag body 22 at a low temperature of 143 degrees, which affects high productivity of the packaging bag with the snap fastener.
  • the manufactured packaging bag with the snap fastener 24 according to the present invention has an excellent high-temperature resistance at 99°C, the preferable open-and-close condition of the bag can be maintained and the appearance of the bag will not be deteriorated.
  • the user can expect wide application of the packaging bag with a fine shape of the packaging bag, because of wide range of temperature when boiling and cooking.
  • the each snap faster 11 in respective experimental examples is prepared as in the mentioned 1st experimental example.
  • the test packaging bags with the thus prepared snap fasteners 24 can be prepared for each experimental example.
  • the hot-welding temperature is set at a temperature of 142 degrees in the 2nd experimental example and 140 degrees in the 3rd-6th experimental examples.
  • Table 1 The shown results in Table 1 are obtained in the same way as the 1st experimental example.
  • An observation of the test packaging bags used in the 2nd-6th experimental examples is that the enough hot-weldability can be obtained at a temperature of from 140-142 degrees which is lower than that in the 1st experimental example and that the thermal properties when boiling reaches at a extremely good temperature of 99 degrees.
  • each of the test packaging bags used in the 2nd-6th experimental examples shows a good property to keep its original shape as in the 1st experimental example.
  • a packaging bag used in the 7th-11th experimental examples has a snap fastener 11 made of L-LDPE and having a different value of Melt Index (herein after referred to as MI).
  • the MI of L-LDPE is set as follows; 2g/10minites in the 7th experimental example, 8g/10minites in the 8th experimental example, 1g/10minites in the 9th experimental example, 9g/10minites in the 10th experimental example, and 15g/10minutes in the 11th experimental example.
  • each snap fastener 11 in respective experimental examples in prepared as in the mentioned 1st experimental example.
  • the test packaging bags with the thus prepared snap fasteners 24 can be prepared for each experimental example.
  • the hot-welding temperature is set at a temperature of 143 degrees in the 7nd-9th experimental examples and 142 degrees in the both 10th and 11th experimental examples.
  • the shown results in Table 1 are obtained in the same way as the 1st experimental example.
  • test packaging bags used in the 7th-11th experimental examples show that the thermal properties when boiling reaches at a extremely good temperature of 99 degrees. Furthermore, each of the test packaging bags used in the 7th-8th experimental examples shows a good property to keep its original shape as in the 1st experimental example so that the good open-and-close performance is not damaged.
  • the packaging bags in the 7th and 8th experimental examples does not show a perfect shape of the snap faster but such state will not be a problem in view of the actual performance of open-and-close.
  • the MI of L-LDPE is set as follows; 1g/10minites in the 12th experimental example, 9g/10minites in the 13th experimental example, and 15g/10minites in the 14th experimental example.
  • each snap fastener 11 in respective experimental examples in prepared as in the mentioned 1st experimental example.
  • the test packaging bags with the thus prepared snap fasteners 24 can be prepared for each experimental example.
  • the hot-welding temperature is set at a temperature of 142 degrees in the 12th experimental example and 140 degrees in the both 13th and 14th experimental examples.
  • test packaging bags used in the 12th-13th experimental examples An observation of the test packaging bags used in the 12th-13th experimental examples is that the thermal properties when boiling reaches at a extremely good temperature of 99 degrees.
  • the test packaging bag used in the 14th experimental example has the thermal properties when boiling reaches at a temperature of 95 degrees.
  • each of the packaging bags in the 12th-14th experimental examples does not show a perfect shape of the snap faster compared with that in the 2nd-6th experimental examples but such state will not be a problem in view of the actual performance of open-and-close.
  • the snap fastener 11 used in this experimental example is made of L-LDPE and the thickness of the base film 23 forming the bag body 22 is varied.
  • the base film 23 consists of two layers, one being of the nylon-6 layer having 15 micrometers thickness and the other being of the L-LDPE layer having 100 micrometers thickness which is thinner than the L-LDPE layer in the 1st experimental example by 20 micrometers.
  • the snap faster 11 is prepared as in the mentioned 1st experimental example.
  • the test packaging bag with the thus prepared snap fastener 24 can be prepared.
  • the hot-welding temperature is set at a temperature of 141 degrees.
  • the shown result in Table 1 is obtained in the same way as in the 1st experimental example.
  • the 16th-19th experimental examples are conducted to confirm whether the packaging bags compounded with other ingredients making the base film 23 are useful or not.
  • Respective ingredients of the base film 23 are as follows; the two layers with the 12-micrometer thickness polyethylene terephthalate (PET) layer and the 60-micrometer thickness LDPE layer in the 16th experimental example, the two layers with the 15-micrometer thickness nylon-6 layer and the 60-micrometer thickness LDPE layer in the 17th experimental example, the two layers with the 20-micrometer thickness biaxially oriented polypropylene finished with vinylidene chloride (KOP) and the 40-micrometer thickness LDPE layer in the 18th experimental example, and the three layers with the 15-micrometer thickness biaxially oriented nylon finished with vinylidene chloride (KON), 15-micrometer thickness LDPE and the 50-micrometer thickness ethylene-vinyl acetate copolymer (EVA) in the 19th experimental example.
  • the respective inner layers of these base films 23 are the LDPE layer in each of the 16th-18th experimental examples and the EVA layer in the 19th experimental example.
  • each snap fastener 11 in respective experimental examples is prepared as in the mentioned 1st experimental example.
  • the test packaging bags with the thus prepared snap fasteners 24 can be prepared for each experimental example.
  • the hot-welding temperature is set at a temperature of 135 degrees in the 16th and 17th experimental examples, 133 degrees in the 18th experimental example, and 126 degrees in the 19th experimental example.
  • the shown results in Table 1 are obtained in the same way as the 1st experimental example.
  • the each snap faster in respective control examples is prepared as in the mentioned experimental examples.
  • the comparative packaging bags with the thus prepared snap fasteners can be made for the following control examples.
  • the used material resins are as follows; the compound resin with the 40wt% L-LDPE and the 60wt% LDPE in the 1st control example, the LDPE in the 2nd control example, and the EVA in 3rd control example.
  • the respective set temperature for hot-welding are 140 degrees in the 1st control example, 145 degrees in the 2nd control example, and 128 degrees in the 3rd control example.
  • the snap fastener according to the 2nd control example does not made of the same resin in this invention, whereby the thermal properties when boiling is limited at a temperature of until 90 degrees, which is poor in view of the actual use.
  • the snap fastener according to the 3rd control example does not made of the same resin in this invention, so that the hot-weldability at a low temperature is fine but the thermal properties when boiling is limited at a temperature of until 90 degrees, which is poor in view of the actual use.
  • the used material resin for the snap fastener 11 is PP in this control example, but when preparing the packaging bag with this snap fastener can not be obtained as the snap faster 11 is not hot-welded to the base film 23.
  • the snap fasteners used in these control examples are made of L-LDPE and the value of MI are varied.
  • the snap fastener 11 is prepared as in the mentioned 1st experimental example.
  • the control packaging bag with the thus prepared snap fastener can be prepared.
  • the MI value of L-LDPE is 16g/10times in the 5th control example and 25g/10minutes in the 6th control example.
  • the fine hot-welding state can be obtained in the control examples 5, 6 at a temperature of 143 degrees.
  • the thermal properties when boiling the packaging bag can be obtained at a temperature of until 99 degrees as in the 1st experimental example, but the shape of the snap fastener is deformed so that the preferable performance of open-and-close is spoiled.
  • a compound rate of L-LDPE and LDPE is changed as 60wt%:40wt% and the MI values are also changed, respectively.
  • the MI value is 16g/10minutes in the 7th control example and 20g/10 minutes in the 8th control example.
  • the snap fastener is prepared as in the mentioned 1st experimental example.
  • the control packaging bag with the thus prepared snap fastener can be made.
  • the hot-welding can be conducted preferably at a temperature of 140 degrees in both control examples.
  • the snap faster 11 made of L-LDPE or the composition of L-LDPE and LDPE can achieve fine hot-welding condition at a lower temperature than that in the 2nd control example by from 2-5 degrees.
  • the snap faster compounded with independent L-LDPE or L-LDPE and LDPE at a composition ratio of 95wt%-60wt%:5wt%-40wt% can obtain the practical thermal properties at a temperature of at least 95 degrees.
  • the thermal properties at a temperature of until 99 degrees can be expected. While, if the mixing ratio of L-LDPE and LDPE to produce the snap faster is beyond the mentioned range, the thermal properties at a temperature of 95 degrees can not be expected as shown in the 1st control example.
  • the shape of the snap fastener can be kept in its original state, and particularly, from 2g/10minutes-8g/10 minutes, the shape can be kept in an extremely good state. While, as in the 5th-8th control examples, when the value MI is beyond 15g/10minutes, the shape of the snap fastener can not be kept in an ideal state.
  • the thinner L-LDPE layer is effective to lower the hot-welding temperature.
  • the snap fastener according to the present invention is superior to the hot-welding to the bag body at the lower temperature than the conventional fastener and to the thermal properties.
  • the packaging bag produced according to the present invention has the fine thermal properties and maintain good state of the performance of open-and-close.
  • Composition of Snap Fastener (wt%) Composition and Thickness ( ⁇ m) of Bag Body Outer Layer/Inner Layer °C Thermal Properties °C MI State of Shape 90 95 99 Ex. Exam. 1 L-LDPE(100) NY6(15)/L-LDPE(120) 143 ⁇ ⁇ ⁇ 6 o ⁇ Ex. Exam. 2 L-LDPE(95)+LDPE(5) " 142 ⁇ ⁇ ⁇ 8 o ⁇ Ex. Exam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (8)

  1. Ein Schnappverschluß (11) beinhaltend einen Anschweißteil (12), der an ein Objekt geschweißt werden kann, um dieses mit demselben zu versehen, dadurch gekennzeichnet, daß der Anschweißteil ein linearkettiges Polyethylen geringer Dichte beinhaltet.
  2. Ein Schnappverschluß gemäß Anspruch 1, worin der Anschweißteil eine Verbindung aus dem linearkettigen Polyethylen geringer Dichte und einem Polyethylen geringer Dichte als Unterbestandteil beinhaltet.
  3. Ein Schnappverschluß gemäß Anspruch 2, worin die Verbindung das linearkettige Polyethylen mit geringer Dichte und das Polyethylen mit geringer Dichte in einem Gewichtsverhältnis von 95:5 bis 60:40 beinhaltet.
  4. Ein Schnappverschluß gemäß Anspruch 2 oder 3, worin die Verbindung einen Schmelzindex von 1 bis 15g/10 Minuten hat.
  5. Ein Schnappverschluß gemäß einem der vorhergehenden Ansprüche, worin das linearkettige Polyethylen geringer Dichte einen Schmelzindex von 1 bis 15g/10 Minuten hat.
  6. Ein Beutel, der wiederholt geöffnet und geschlossen werden kann und beinhaltet: Einen Beutelkörper (22), der an drei Seiten wärmeverschweißt ist; und einen Schnappverschluß (11), dessen Anschweißteil an einen Seitenteil angeschweißt ist, der sich von den anderen drei Seiten des Beutelkörpers unterscheidet, dadurch gekennzeichnet, daß der Schnappverschluß so wie in einem der vorhergehenden Ansprüche definiert ist.
  7. Ein Beutel gemäß Anspruch 6, worin der Beutelkörper eine an den Schnappverschluß angeschweißte Innenseitenschicht aufweist, die ein linearkettiges Polyethylen geringer Dichte beinhaltet.
  8. Ein Beutel gemäß Anspruch 7, worin der Beutelkörper mehrere laminierte Schichten beinhaltet, deren an einer Innenschicht befestigte Außenschicht aus Nylon gemacht ist.
EP93302861A 1992-04-17 1993-04-14 Druckknopf und diesen aufweisender Verpackungssack Expired - Lifetime EP0566363B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP97918/92 1992-04-17
JP4097918A JPH05294352A (ja) 1992-04-17 1992-04-17 咬合具及び咬合具付き包装用袋

Publications (2)

Publication Number Publication Date
EP0566363A1 EP0566363A1 (de) 1993-10-20
EP0566363B1 true EP0566363B1 (de) 1998-06-17

Family

ID=14205086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93302861A Expired - Lifetime EP0566363B1 (de) 1992-04-17 1993-04-14 Druckknopf und diesen aufweisender Verpackungssack

Country Status (6)

Country Link
US (1) US5415904A (de)
EP (1) EP0566363B1 (de)
JP (1) JPH05294352A (de)
KR (2) KR930021728A (de)
AU (1) AU670936B2 (de)
DE (1) DE69319171T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG154316A1 (en) * 2000-03-07 2009-08-28 Hosokawa Yoko Kk Reclosable packaging bag method for manufacturing same

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5658651A (en) 1995-09-29 1997-08-19 Creative Products Resource, Inc. Fabric treatment and softener system for in-dryer use
CA2221635A1 (en) 1995-06-05 1996-12-12 Creative Products Resource, Inc. Dry-cleaning kit for in-dryer use
US6086634A (en) 1995-06-05 2000-07-11 Custom Cleaner, Inc. Dry-cleaning compositions containing polysulfonic acid
US6036727A (en) 1995-06-05 2000-03-14 Creative Products Resource, Inc. Anhydrous dry-cleaning compositions containing polysulfonic acid, and dry-cleaning kits for delicate fabrics
JP3725917B2 (ja) * 1995-09-04 2005-12-14 出光興産株式会社 咬合具及び咬合具付き包装用袋
US5919535A (en) * 1996-12-05 1999-07-06 Tenneco Packaging Fins for plastic bags
US5851070A (en) * 1996-12-05 1998-12-22 Tenneco Packaging Inc. Seals for plastic bags
US6376035B1 (en) 1996-12-05 2002-04-23 Pactiv Corporation Zipper fins for plastic bags
US6216423B1 (en) 1997-11-07 2001-04-17 Huntsman Kcl Corporation Method and apparatus for placing a product in a flexible recloseable container
US6092931A (en) * 1998-01-16 2000-07-25 Reynolds Consumer Products, Inc. Closure mechanism with a heat-insulating layer
CA2269358C (en) * 1998-05-21 2005-04-12 Illinois Tool Works Inc. Transverse direction zipper tape
US6286189B1 (en) 1999-05-10 2001-09-11 Pactiv Corporation Zipper and zipper arrangements and methods of manufacturing the same
US6292986B1 (en) 1999-05-10 2001-09-25 Alexander R. Provan Assembly and accumulation of sliders for profiled zippers
US6327754B1 (en) 1999-05-10 2001-12-11 Pactiv Corporation Fastener with slider thereon for use in manufacturing recloseable bags
US6071011A (en) 1999-08-12 2000-06-06 Tenneco Packaging, Inc. Fill-through-the-top package
ZA200101705B (en) * 2000-03-07 2001-08-30 Hosakawa Yoko Co Ltd Reclose packaging bag and method for manufacturing same.
US6439771B1 (en) 2000-03-15 2002-08-27 Webster Industries Division Chelsea Industries, Inc. Zippered resealable closure
US6494018B1 (en) 2000-08-09 2002-12-17 Pactiv Corporation Method and apparatus for guiding a fastener in a bag making machine
US6508969B1 (en) 2000-08-10 2003-01-21 Pactiv Corporation Injection-molded end stop for a slider-operated fastener
US6470551B1 (en) 2000-08-10 2002-10-29 Pactiv Corporation Method of making a fasteners arrangement with notches at spaced preseals
US6871473B1 (en) * 2000-08-10 2005-03-29 Pactiv Corporation Method and apparatus for making reclosable plastic bags using a pre-applied slider-operated fastener
US6389780B1 (en) 2000-08-10 2002-05-21 Pactiv Corporation Zipper bag form, fill and seal machine and method
US6526726B1 (en) 2000-08-10 2003-03-04 Pactiv Corporation Method of applying a slider to a fastener-carrying plastic web
US7451530B2 (en) * 2001-04-30 2008-11-18 Gore Enterprise Holdings, Inc. Device for creating a seal between fabrics or other materials
US6721999B2 (en) * 2001-04-30 2004-04-20 Absolute Closure Innovations, Inc. Device for creating a seal between fabrics or other materials
US6611996B2 (en) 2001-07-02 2003-09-02 Pactiv Corporation Slider for reclosable fastener
US6713152B2 (en) 2001-09-07 2004-03-30 Pactiv Corporation Fins and profiles for plastic bags
US6918234B2 (en) * 2002-02-21 2005-07-19 Pactiv Corporation Process for attaching slider-operated closure on form-fill-seal packaging machinery
US7159282B2 (en) 2002-03-01 2007-01-09 Pactiv Corporation Reclosable fasteners or zippers for use with polymeric bags
US7341160B2 (en) * 2002-08-08 2008-03-11 Pactiv Corporation Reclosable package having an accessible zipper and a method for making the same
US6780146B2 (en) * 2002-09-17 2004-08-24 Pactiv Corporation Methods for applying sliders to reclosable plastic bags
US20050036717A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated zipper for use in vacuum packaging
US7137736B2 (en) * 2003-05-19 2006-11-21 S.C. Johnson Home Storage, Inc. Closure device for a reclosable pouch
US20040234171A1 (en) * 2003-05-19 2004-11-25 Dais Brian C. Reclosable pouch with closure device that allows venting and/or an air-tight seal
US20050271308A1 (en) * 2004-06-04 2005-12-08 Pawloski James C Closure device for a reclosable pouch
US7850368B2 (en) * 2004-06-04 2010-12-14 S.C. Johnson & Son, Inc. Closure device for a reclosable pouch
JP5039556B2 (ja) * 2004-10-25 2012-10-03 ゴア エンタープライズ ホールディングス，インコーポレイティド 織物または他の材料との間のシールを形成する装置
US20060188181A1 (en) * 2005-02-22 2006-08-24 Haut Dale S Take-a-break paint fresh bags
KR100647752B1 (ko) * 2006-01-19 2006-11-24 재단법인 한국계면공학연구소 이단 이층 복합여과장치
CA2659258C (en) * 2006-06-28 2013-01-08 Gore Enterprise Holdings, Inc. Device for creating a seal between fabrics or other materials
US20080124008A1 (en) * 2006-11-19 2008-05-29 Ben Meager Devices and methods for forming a closure between fabrics and/or other materials
US20080271298A1 (en) * 2007-01-11 2008-11-06 Benjamin Meager Device for creating a seal between fabrics and/or other materials and methods of making and using the same
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
JP2010540075A (ja) * 2007-09-25 2010-12-24 ゴア エンタープライズ ホールディングス，インコーポレイティド 自己潤滑性ファスナー
US20110151744A1 (en) * 2009-12-23 2011-06-23 Archer Brendan B Inflatable device
US8327464B2 (en) 2010-06-07 2012-12-11 Glenn Jaros Slidable permanent fastener
US8550716B2 (en) 2010-06-22 2013-10-08 S.C. Johnson & Son, Inc. Tactile enhancement mechanism for a closure mechanism
US9327875B2 (en) 2010-10-29 2016-05-03 S.C. Johnson & Son, Inc. Reclosable bag having a loud sound during closing
US11180286B2 (en) 2010-10-29 2021-11-23 S. C. Johnson & Son, Inc. Reclosable bag having a loud sound during closing
US8974118B2 (en) 2010-10-29 2015-03-10 S.C. Johnson & Son, Inc. Reclosable bag having a sound producing zipper
US8568031B2 (en) 2011-02-22 2013-10-29 S.C. Johnson & Son, Inc. Clicking closure device for a reclosable pouch
US8469593B2 (en) 2011-02-22 2013-06-25 S.C. Johnson & Son, Inc. Reclosable bag having a press-to-vent zipper
DE102018126975A1 (de) * 2018-10-29 2020-04-30 Aesculap Ag Behältersystem und Verfahren zur Ausbildung eines Knaufs in einem Behälter
WO2021016541A1 (en) * 2019-07-25 2021-01-28 Harrell Jennifer Apparatus for the safekeeping of jewelry articles
US11518600B2 (en) * 2020-03-23 2022-12-06 American Sterilizer Company Interface/pouch design for aseptic opening of sterilization pouch

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358466A (en) * 1980-04-11 1982-11-09 The Dow Chemical Company Freezer to microwave oven bag
US4421805A (en) * 1982-04-29 1983-12-20 Mobil Oil Corporation Slip-resistant shipping sacks
US4687688A (en) * 1986-02-18 1987-08-18 American Can Company Oriented multiple layer films and bags made therefrom
US4691372A (en) * 1986-08-05 1987-09-01 Minigrip, Inc. Manufacture of multi-layered reclosable bag making material and bags made therefrom
US4756629A (en) * 1987-04-23 1988-07-12 Minigrip, Inc. System for producing non-compatible zipper film
JPS648659A (en) * 1987-06-30 1989-01-12 Mitsubishi Electric Corp Supplementary semiconductor integrated circuit device
AU3247489A (en) * 1988-04-07 1989-10-12 Idemitsu Petrochemical Co., Ltd. Snap zipper, bag with snap zipper, manufacture method and apparatus for bag with snap zipper, and bagging method and apparatus for bag with snap zipper
US4859513A (en) * 1988-05-09 1989-08-22 International Paper Company Oxygen impermeable leak free container
US4997710A (en) * 1988-09-29 1991-03-05 W. R. Grace & Co.-Conn. Barrier coextruded film for cook-in applications
JP2750382B2 (ja) * 1988-11-29 1998-05-13 出光石油化学株式会社 咬合具および咬合具付包装用袋

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG154316A1 (en) * 2000-03-07 2009-08-28 Hosokawa Yoko Kk Reclosable packaging bag method for manufacturing same

Also Published As

Publication number Publication date
JPH05294352A (ja) 1993-11-09
US5415904A (en) 1995-05-16
AU3692793A (en) 1993-10-21
AU670936B2 (en) 1996-08-08
DE69319171D1 (de) 1998-07-23
EP0566363A1 (de) 1993-10-20
KR100287435B1 (ko) 2001-11-22
KR940005474A (ko) 1994-03-21
KR930021728A (ko) 1993-11-22
DE69319171T2 (de) 1998-11-05

Similar Documents

Publication Publication Date Title
EP0566363B1 (de) Druckknopf und diesen aufweisender Verpackungssack
US5004356A (en) Fastener and wrapping bag having the same
US5930877A (en) Peel seal zipper tape
US8481135B2 (en) Engaging member and packing bag with engaging member
JP5410291B2 (ja) 咬合具、咬合具付き包装袋および咬合具付き包装袋の製造方法
EP1982610A1 (de) Reissverschlussband, verpackungsbeutel mit reissverschlussband und vorrichtung zur herstellung von verpackungsbeuteln mit reissverschlussbändern
KR20070020241A (ko) 척 테이프 및 척 테이프 부착 포장 백
KR20040077856A (ko) 개봉 테이프 부착 밀봉 백
CA2464696A1 (en) Hermetically heat-sealable-pressure-reclosable packaging article containing substantially spherical homogeneous polyolefin
CA2204713C (en) Peel seal zipper tape
CA1199443A (en) Blends of butene-1-ethylene copolymers and polypropylene
US6805486B2 (en) Closure system
US6092931A (en) Closure mechanism with a heat-insulating layer
EP0930241A1 (de) Verschlussvorrichtung mit wärmeisolierendem Füllstoff
US7246415B2 (en) Zipper and the packaging therewith
EP0196727A1 (de) Mehrschichtiger Sack mit einem öffenbaren Siegel
EP0597650B1 (de) Beutel mit komplementären Profilverschlussstreifen
JPH11221887A (ja) シーラントフィルム
JP4471193B2 (ja) 熱融着性プロピレン系重合体積層フィルム及びその用途
JP4039558B2 (ja) 熱融着性プロピレン系重合体フィルム、積層フィルム及び包装体
JP2733572B2 (ja) 包装袋
JPH08192858A (ja) 咬合具及び咬合具付包装用袋
EP0881156B1 (de) Komplementärer Profilverschlussstreifen mit einer abreissbaren Abdichtungsschicht
MXPA97003073A (en) Dependable seal controlled with individual characteristics
JP2001240082A (ja) 嵌合具及び嵌合具付包装用袋体

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19940412

17Q First examination report despatched

Effective date: 19951116

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69319171

Country of ref document: DE

Date of ref document: 19980723

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060406

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060410

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060412

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070430